Upgrade to 5.70 ASAP

https://www.ghacks.net/2019/02/21/winrar-has-a-critical-security-bug-here-is-the-fix/

WinRAR has a critical security bug: here is the fix
by Martin Brinkmann on February 21, 2019 in Security - 33 comments
WinRAR is a very popular software to create and extract archives on Windows
and other 
supported operating systems. Part of its popularity comes from its support
for different 
types of packing formats, another that the software's trial version never expires.

A bug was discovered recently that affects all versions of WinRAR prior to
5.70. The bug, 
a remote code execution vulnerability, affects all WinRAR versions and thus all 500 
million users that use the application.

Security researchers discovered a flaw in a library that WinRAR uses to
extract files from 
archives packed with the ACE format.

Attackers can exploit the vulnerability by pushing specially prepared
archives to user 
systems. The bug can be abused to extract the files into any folder on the system 
instead of the folder selected by the user or the default folder for
extracted files. 
--- Platinum Xpress/Win/WINServer v7.0